Repair your own keyboard without opening up your computer.  

Offered is a single key cap and hinge replacement for Lenovo ThinkPad laptop models T400S, T410, T420, X220, T510, T520, and W520. 

You will receive a key cap and two-piece hinge.  Also for larger keys there is an alignment wire required, and for these keys the wire is included.

Take advantage of discount for multiple key cap purchases.  Shipping via First Class mail to save you money.